“…Nf1 mRNA and neurofibromin are expressed in mouse bone and cartilage during development and adulthood [Kuorilehto et al, 2004a], and more specifically in mesenchymal stem cells, chondrocytes, osteoblasts [Elefteriou et al, 2006;Kolanczyk et al, 2007], and osteoclasts [Yang et al, 2006a]. This pattern of expression suggested that NF1-related skeletal defects stem in part from primary osseous defects caused by bone cellular dysfunctions related to generalized NF1 heterozygosity, and/or to NF1 loss of function in specific bone cell types.…”